EP 4054070 A4 20231101 - CONTROL METHOD AND SYSTEM FOR THREE-PHASE GRID-CONNECTED INVERTER, AND THREE-PHASE GRID-CONNECTED INVERTER
Title (en)
CONTROL METHOD AND SYSTEM FOR THREE-PHASE GRID-CONNECTED INVERTER, AND THREE-PHASE GRID-CONNECTED INVERTER
Title (de)
VERFAHREN UND SYSTEM ZUR STEUERUNG EINES DREIPHASIGEN NETZGEKOPPELTEN WECHSELRICHTERS UND DREIPHASIGER NETZGEKOPPELTER WECHSELRICHTER
Title (fr)
PROCÉDÉ ET SYSTÈME DE COMMANDE POUR ONDULEUR CONNECTÉ À UN RÉSEAU TRIPHASÉ, ET ONDULEUR CONNECTÉ À UN RÉSEAU TRIPHASÉ
Publication
Application
Priority
- CN 201911045352 A 20191030
- CN 2019126250 W 20191218
Abstract (en)
[origin: EP4054070A1] A three-phase grid-connected inverter, a control system thereof and a control method therefor. The inverter is a three-phase three-leg grid-connected inverter, and a filter capacitor is connected to a negative electrode of a DC input bus to form a filter loop, so as to filter harmonic wave in the circuit, realizing high-quality grid-connected current at small power, without increasing an inductance value, so that the parallel inverter device in the system operates stably and thus is applicable to photovoltaic microinverters. Moreover, the three-phase three-leg grid-connected inverter operates in a discontinuous conduction mode, that is, in a switching cycle, the inductive current is reduced to 0, so that the switching loss of the three-phase three-leg grid-connected inverter is reduced.
IPC 8 full level
H02M 7/5387 (2007.01); H02M 1/12 (2006.01)
CPC (source: CN EP US)
H02J 3/01 (2013.01 - EP); H02J 3/38 (2013.01 - EP); H02M 1/0025 (2021.05 - EP); H02M 1/0043 (2021.05 - US); H02M 1/12 (2013.01 - EP); H02M 1/126 (2013.01 - CN EP US); H02M 7/5387 (2013.01 - CN US); H02M 7/53871 (2013.01 - EP)
Citation (search report)
- [A] CN 103427435 A 20131204 - BEIJING DYNAMIC POWER CO LTD
- [XAI] LE HOAI NAM ET AL: "Discontinuous Current Mode Control for Minimization of Three-phase Grid-Tied Inverter in Photovoltaic System", 2018 INTERNATIONAL POWER ELECTRONICS CONFERENCE (IPEC-NIIGATA 2018 -ECCE ASIA), IEEJ INDUSTRY APPLICATION SOCIETY, 20 May 2018 (2018-05-20), pages 2519 - 2526, XP033428498, DOI: 10.23919/IPEC.2018.8507654
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 4054070 A1 20220907; EP 4054070 A4 20231101; BR 112022004122 A2 20220531; CN 112751497 A 20210504; CN 112751497 B 20220308; MX 2022002799 A 20220406; US 11770065 B2 20230926; US 2022255420 A1 20220811; WO 2021082220 A1 20210506
DOCDB simple family (application)
EP 19950673 A 20191218; BR 112022004122 A 20191218; CN 201911045352 A 20191030; CN 2019126250 W 20191218; MX 2022002799 A 20191218; US 201917432935 A 20191218